The last time the San Diego Chargers beat the Oakland Raiders was on November 1, 2009.
As of 2008 the Chargers have won the Raiders 10 times in a row.
The last time the Oakland Raiders beat the San Diego Chargers was on Sunday October,10th. 2010.
On December 5, 2010, the Raiders defeated the Chargers, 28-13, at San Diego. It gave Oakland a rare season's sweep over their longtime rivals in Southern California. Earlier, Chargers hadn't lost a regular-season game to the Oakland Raiders since September 28, 2003 at Oakland -- a streak of 13 games. But on October 10, 2010, the Raiders upset the Chargers, 35-27, with two touchdowns in the final four minutes.
On December 5, 2010, the Raiders defeated the Chargers, 28-13, at San Diego, giving Oakland a rare sweep against their rivals. On October 10, 2010, the Raiders defeated the Chargers, 35-27, with two touchdowns in the final four minutes. The Raiders' victory ended a 13-game losing streak to the Chargers, dating back to 2003.
Chargers have beat the Raiders 44 times. Raiders have beat the Chargers 54 times and there has been 2 tied games in these teams NFL history.
As of December 9, 2010 (12 games into the season), the Raiders have beaten the following teams to amass a 6-6 record:St. Louis Rams (Week 2)San Diego Chargers (Week 5)Denver Broncos (Week 7)Seattle Seahawks (Week 8)Kansas City Chiefs (Week 9)San Diego Chargers (second time; Week 13)
In 1961 the Chargers beat the raiders 44-0. The have scored more points (58) however 44 is the largest win margin that I could see.
Prior to the 2007 season, the last time the Raiders beat the Chiefs was December 28, 2002 in Oakland when the Raiders won 28-0.